To configure a refresh script
- Start Group Policy Editor.
 - Expand the Unix Setting | Scripts node.
 - Double click Refresh Scripts. 
The Refresh Script Properties dialog opens.
 - Click Add. 
The New Script dialog opens.
Note: Typically, you write and test the script on the target platform.
 - Click Import. 
A file browse dialog appears.
 - Select the script file and click Open. 
The script you choose automatically displays in the Name field.
Note: If you do not have a script to import, add a name for the script, select it on the property page and click Edit Script. Group Policy opens a text editor to allow you to create it "on the fly".
 - In the Parameters field, enter any parameters to pass to the script on the command line.
 - 
Select Options:
- Run As User: Check this box and enter a user name to force the script to run as a specific user on the Unix host.
 - Run once: Check this box to prohibit the script from running more than one time on the Unix host.
 
 - Click Add. 
The new script displays in the list of configured scripts for this policy.
 - Select the script in the list. 
The Script Preview pane displays the read-only contents of the script.
 - Click Edit Script to edit the contents of configured scripts. 
Your text editor launches with the contents of the script so that you can edit and save the script.
 - Close the text editor and save the contents. 
The Script Preview pane displays the updated script contents.